Selective ringing and talking device.



c. 0. SISLER & L, j). SMILEY,

'SELBCTIVB EIN-INGAND TALKING DEVICE. APPLIATION FAILED 00122, 1908 atented July 13, 1909.

C, U. SSLER- 65 L. D. SMILEY. SELECTIVE RINGING AND TALKING DEVICE.

AFLIGATloN FILED 00T. 2, 1908.

4 SHEETS-SHEET `2.

Patented July 13, 1909.

@n mm row .50g/dil y and @Hannut G. 0. SISLBR t L. D. SMILEY.

BELEGTIV BIN GIN G AND TALKING :DEVICE AlfPLIoATIoN FILED .001'. 2. 100s.

" 927,816. Patented .my `13, 1509.

4 SHEETS-SHEET 3.

' I albumi C. 0. SISLER L. D. SMILEY. SBLBGTIVE BINGING TALKING DEVICE.v APrfLIoATIon FILED 0012. 190s.

927,81 6. Patented July 13, 1909.

4 SHEETS-SHEET 4.

@Room gyda Afm@ ma:

f specification,

. To till they concern. "i

l, rNolezaeie.

Umm? SlArEs'A PATENT OFFICEl Sits-LER iID'LLQLD DSMILEYQ 0F `UNIONT'oWit,` .1;

l. 7;L SELEcTrvEQRiNGING AND-TALKING DvIC.-

vBeit known "that we, CHARLES O. Sisma and LLorpeD. SMILEY, citizens ofthe United States, residing. at Uniontown, in the county of' Fayette and State of Pennsylvania, have invented `certain new and useful Improvements .in ySelectlve Rin n *ing and Talking Devices-pfgwhich the followingis a specification. n y

{'.llii'sr-7 -inventionjrelates to electrical ap- A aratusandielfers especially to a lock-out evice forfselective` communication upon a single pair of wires between parties upon the wires. :I y

.An 'ob'ect of this inventionis the provision ofuiadevlce of this character that willenable parties to intercommunicate upon the same Wires to the exclusion of all other parties connected upon the same wires and that enables aparty `upon the wires to communicate-with ank outslde party to the exclusion oft-all other partiesk upon the same wires. lVith' this arrangement there will be a saving Aof a large percentage-of wire in the construction of a telephone line. l c Another object Iolli thisl invention is the construction zand varrangement cfa device of this character that will operate on either the common or 0n-- the local-battery systems in present use so that it` can be adapted to use in largeA office buildings, private exchanges-and the like.

' The invention,V further designs a device of this structure that can. take the place of small vexchanges in outlying districts by installing the device upon-the main switch board of the system.

=A still'f'furtherk object of this invention is: the 4provision of the device that can be positioned'in a telegraph system to do away with uthe confusion in signaling operators from'the main telegraph stations.-

Other Kobjects and advantages will be aparent from the following description and 1t will-"be-underlstood that changes in the specific structure shown and described may be made within the scope-ofthe claims without departing from the spirit of the" invention. l I

fln the drawings forming a portion ofthis and in which like numerals of reference indicate similarparts intheseveralviews, Fi re 1 is a diagrammatic view of a system o wiring of a telephone circuit having the lapparatus applied thereto, S'Flg. 2` is afffront 'elevation of.;r the\device,nF1g.:3

is aside elevation ofthe same, Fig. iiis'ia front elevation ot the device, having ythe casing removed, l*`1g.,5 is a top plan View of the device showing the Contact arm in .a-

depressed Vposit-ion, the casing being in section. Fig. 6 is a vertical sectional View ot the device looking toward the front thereof, Fig. .7 is a side elevation of the device as applied to a subscribers telephoneinstrument.

Referring now to the drawings,y 10 designates, a base which is adapted to be posit-ioned in the vertical and which is provided with the binding posts 1 1 and 12 for the connection of the circuit wires to actuate the apparatus. A mounting 13 is positioned upon the outer face of the base 10 which extends outwardly and supports upon its upper face a pair of magnets 1l, the wire 15 ot1 which is Asecuredto the binding post 11. The post 11 is' connected to the bindlng post 12 by a wire 1.6. The opposite wire 18 of the magnets 14 leads to a condenser 59 mounted upon the base 10 adjacent the niagnets 14. The opposite lug of the condenser 59 is connected toene-of the pos/ts -'12 by a wire 19 and to the ring 43 by a wire 2O.I

Adjacent to the magnetsv 14 at the edge of the base 1'0 is positioned a post 21 which carries at its upper end a pivotally mounted armature 22 which swings vertically before the extremities of the magnets let. The armature 22 is provided with a leaf'spring 23 upon its upper face at the pivoted end thereor, Awhich spring is carried backwardly about the extremity of the armature. y

where it is tcnsionally held in such position by a pin 24. The forward or free end of the armature 22 is provided with a` guide 25 which is carried by the base 10 and which serves for keeping the armature in the same plane throughout its operations. The extremity of the armature 22 is 'lorked to receive the lower end of a`,pawl lever 26 which is secured between theforks by a pivot pin 27 and which is guided in its operation by a guide 28 which`is raised from the face of the base 10. The guide 28 carries a leaf spring 29 which extends upwardly there- 'from and engages the edge of the pawl lever 26-for the purpose ot' tcnsionally holding the pawl lever 26 in a central position. The armature 22 is providedwitha lsuitable stop 30 to prevent the same from rising beyond the `rest 25 under spring-23. c

the tension of ,the

, '35 tion by a thrust rod-42 which is carried-by outer face thereof as shown at -31 which carries a sleeve 32 uponthe upper end of which is' revolubly mounted a ratchet Wheel c 33 for engagement with the paxvl-lever 2G.

'The sleeve- 32 also carriesa loosely mounted contact arm 34 which is provided upon its outer'face with a stud 35 which engages in a. recess formed in thel under face of the ratchet 33. The arm 34is pressed into engagement with the ratchet 33 by `means of a coil spring 36 which is positioned between the base 10 and the under face of Athe arm 34. The shaft 32 is provided with a nut 3T for-the purpose of preventingthe ldisplacementof the-sleeve 32. f

The complete apparatus is provided with a casing 38 which -is positioned vover and about'the same' to protect the several parts thereof from dust and'u-ndue contact whereby 4the parts may be vbroken or displaced.

AThe casing. 38 carries an inwardly extended f arm 39 which is provided vvithfa locking f side thereof, by the receiver hook.

pavvl 40'for engagement with the ratchet to prevent a backward movement of the same.

The base 104 carries a circular ring 43' which is concentrically disposed about the shaft 31 ndwhich is formed of a current conducting substance and which is provided with a plurality of recesses into which contact points are adapted to be inserted.` Then the arm 34 is in its normal inoperat-ive position it-is engaged against the neutral contact` point 41 and held in that posithe casing 38` and is operated from the out- As shovtn in the drawings the ring 43 is, provided vvith a contact point -44 live points around from )the neutral vcontact 41. The

.ring 43 is -provided with one more aperture thany the number of subscribers or partiesV upon the line7 as for instance if'the line be a party `line having ten parties connected` thereon the ring 43 will be provided with 11 recesses into Which contact points may be inserted. The ratchet 33 is in a like manner .provided with eleven teeth to correspond tothe,.eleven-apertures 'o r points of contact. The arm 34isfwprovidedupon its outer extremityvvithfa contact 45 which tensionally f engages rthe l cont-act` pointsl as the varm is actuated during the operation of the device. The, bar 42 is preferably 'provided with a rubber tip-for engagement'vvith the ,upper` face of the arm 34.

current is produced. 'Fromthe magnetofthe' 'yvire 4 6. leads to--a circuit closingkey' 49 out A a mtothe--main line passing through .thecoperae keyv 49'which isA positioned vat the central oliice and which 1s actuated inthe usual manner. The selecting currentof the apparatus is produced by a dynamo 54 o r the like v'vhich preferably produces an alternating current and .which 41s connected tothe 'main li'ne through the wires 55 and 56, the circuit being closed by a44 key 5T.' The wire 56 is lead. out tothe part-y phonesl Where itis divided into sections 58 whichare connected to the binding posts 12 of the lock-out devicesivhich lead through 'the magnets 14 into the condensers 59 then through the Wires 19 out onto the main -line 46 through the wires 50. `The current produced by the source 54 travels through this circuit above mapped out and also passes into the indicator 61 which is positioned at the central station for the purpose of pointing out the exact positions of the arms' 34 at the party phone. A condenser 62 isalsov employed between the wire 55 and the indicator 61.y

The indicator61 is of the same structure as the lock out device which is used at each of the party phoneslwith the exception that the arm 34 is rigidly carried upon the sleeve 32 and strikes a Contact point at each aper- '.tureV which is formed in the ring 43 as all parties are connected through the indicator. The sleeve 32 is extended to the outer face of the casing of the indicator 61 Where .an indicator hand 65 is positioned to mark olf upon a dial 66 the positions of thearms 34 upon the lock-device at the party phone.

In Fig. 1 of the drawings the apparatus which is marked off between the dotted line's' A5 B and C is employed at Vthel central sta-4 tion and serves to control the communica-4 tionsof theseparate party phones.

The casing 38 is provided with an a erture in the frontth'ereof in which' is positioned a piece of glass 6 7 or the like for the purpose or reading a dial 68 which vis positioned upon the louter face of* the arm 34 to Aindicate when the mainline is'not busy; The glass ,(iis, positioned direct-ly over the' heut-ral contact point 41 so. that `the ld ial can onlyV beread ywhen the ar1n..34 is inthe neutral position.

The ope-ration vof thedevice asfollows: i

"hen the line is not in use the arms 34 are all" positioned 'upon the contact points 41 and the dial 681ndicatesthe same through the glass 67 When centralreceives a. call forenumlper. 54 of artyline the ,selecting key 57 is. actuated ve times to makean break the circuit which asses fromth'emam tioned on said base in' engagement Withsaid The arm Set of the party phone which regisengaged from the .magnets let, Condenser 59, sections 19 and=l back to the main lines through the wire 50 causing 'the magnets 14 toactuate the pawl lever 26 and 'swing the arm` 34 tive points.

ters to this number is now connected tothe point it "whence the current is passed through the phone 63. It is thus seen that the remaining phones upon a line are disconnectedforthe reason that the arms 3f `are-out ofcontact'ivith the proper points 41 or 44 and therefore the party incommunication. with the phone registering to the five4 pointsea'n use the same to the exclusion of the remaining parties. Supposing` that there Vare ten parties on the line and that number 5 desires to call number S. Number 5 would have to ring central in the usual manner and raise the receiver to release the hool'and'to depress the thrust rod 11-2 to force .the arm- 34 out ofengagement With the ratchet '33 so that number 5 can hold theoint.y 'Central now' closes the magnet circuit eight times and aetuat'es the arms 3st to move eight pointsivith the .exception'fof the arm tat'the party number 5, as it is disratchet 33. As number 8 i'stheonlyparty AWhose contact pointd is in `alinement with the arm 34 the line is open/only tothe parties number 5 and numberS.

1 Inselecting mechanism, a base, magnets disposed 'upon said base,'a ring on said base, a neutral conta'ctpoint on said ring, a second contact point positioned upon said ring, a shaftcentrally disposed of-said'ring, a sleeve on said shaft, a rathetrigidly carried at vthe upper extremity of said sleeve, a vheadon vin proximity to said normally holding said armature away from 'said magnets mounted upon said base, a rest said shaft for securing'sa'id' sleeve in' position, a'looselylmounted arm ou 'said sleeve, a springabout said sleeve for frictionally holding said'arm. against the under side of said ratchet an armaturepositioned injuxta position to said magnet and a paivl lever carried-by saidarmature for the purpose of. engaging.' and actuatingA said ratchet.

2. A selecting.mechanism comprising a base,magnetssecured upon said base, apost positioned on said base, an armature. pivot" ally mounted upon said post in juxtaposition to said magnets, a stop for limiting the movement of said armature, a res-t positioned on said base for supporting said armature,l a pawl lever vpivotally .carried in the outer extremity of said armature, a guide'posilever, a spring disposed on said guide for tensionallyholding said lever centrally and mechanism adapted te be actuated by said lever for making` a circuit for aV phone on a party line.A j

A device of the character described having a ring, contact points on said ring, ashaft mounted centrally' in said ring, a sleeve on said shaft, a head on said shaft for preventing the displacement of said sleeve, a ratchet disposed about the upper end of said sleeve having an aperture formed in the under face thereof, an arm loosely mounted upon said sleeve, a spring disposed about said sleeve for tensionally holding said arm against the under side of said ratchet,

a stud upon tho upper face of said arm for engagement 1n said aperture` at times, a thrust bar for depressing said arm from said ratchet, means for actuating said ratchet and a pawl fo'r engagement with said ratchet for the purpose of preventing the back movement of the same.

4. A selecting mechanism comprising a cbase, magnets supported upon said base, an

armature pivotally supported upon said base magnets, a spring for on said ase of said armature, a pawl lever carriedA in the forked end of said armature, a guide positioned on said base'for engagement with said lever a 'spring disposed on said' guide for engagement with said lever, a shaft mounted on said base, a pawl mounted,y in juxtaposition to vsaidshaft, a ratchet mounted about said shaft for engagement with said pawl an arm loosely mounted on .said shaft beneath said ratchet, a spring for tcnsionally holding said arm against said ratchet, said spring being disposed about said shaft, a stud on said arm for engagement at times injan aperture in said ratchet', a 'ring-eoneentrieally disposed on said base about sail shaft, contact points disposed above said ring and'athrust lever for d'e-A pressing said arm against one of said contact points, said pavvl' lever adapted `to engage and actuate said ratchet' for the purpose'of actuating said arm,

In test'mony whereof we attix our. signatures, in presence of two witnesses. CHAS. O. SISLER.

Vtnesses:

'D.'V. SMILEY,

HENRY B.' Ru'r'rnn. 

